Planetary hours
in Houston.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Friday, 4 September 2026: day of Venus
- Sunrise
- 07:00
- Sunset
- 19:39
- Next sunrise
- 07:00
A day hour lasts 1h 03m; a night hour, 57 min. Local time (America/Chicago).
Day
- 1♀︎ Venus07:00 – 08:03
- 2☿︎ Mercury08:03 – 09:06
- 3☽︎ Moon09:06 – 10:10
- 4♄︎ Saturn10:10 – 11:13
- 5♃︎ Jupiter11:13 – 12:16
- 6♂︎ Mars12:16 – 13:20
- 7☉︎ Sun13:20 – 14:23
- 8♀︎ Venus14:23 – 15:26
- 9☿︎ Mercury15:26 – 16:30
- 10☽︎ Moon16:30 – 17:33
- 11♄︎ Saturn17:33 – 18:36
- 12♃︎ Jupiter18:36 – 19:39
Night
- 1♂︎ Mars19:39 – 20:36
- 2☉︎ Sun20:36 – 21:33
- 3♀︎ Venus21:33 – 22:30
- 4☿︎ Mercury22:30 – 23:26
- 5☽︎ Moon23:26 – 00:23
- 6♄︎ Saturn00:23 – 01:20
- 7♃︎ Jupiter01:20 – 02:17
- 8♂︎ Mars02:17 – 03:13
- 9☉︎ Sun03:13 – 04:10
- 10♀︎ Venus04:10 – 05:07
- 11☿︎ Mercury05:07 – 06:04
- 12☽︎ Moon06:04 – 07:00
Other cities · United States
Questions
How are the planetary hours calculated in Houston?
On Friday, 4 September 2026, the Sun rises at 07:00 and sets at 19:39: the day lasts 12h 40m, that is twelve day hours of 1h 03m. The night, until the next sunrise at 07:00, lasts 11h 21m: twelve night hours of 57 min.
Which planet rules the first hour that day?
Venus, from 07:00 to 08:03: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mercury, the Moon, Saturn, Jupiter, Mars, the Sun, then Venus again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.